Armchair



FIG. 1 is a perspective view of an armchair showing my new design;

FIG. 2 is a front perspective view of the armchair;

FIG. 3 is a perspective view of the back of the armchair;

FIG. 4 is a top plan view of the armchair;

FIG. 5 is a side elevational view of an armchair, the opposite side being a mirror image thereof;

FIG. 6 is a bottom plan view of the armchair. 

The ornamental design for an armchair, as shown and described. 